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  • please solve RD sharma class 12 chapter 24 vector or cross product exercise Fill in the blanks question 3 maths textbook solution

please solve RD sharma class 12 chapter 24 vector or cross product exercise Fill in the blanks question 3 maths textbook solution

Answers (1)

\theta =\frac{\pi}{2}

Hint: Use formula of cross product

Given:

\vec{a} & \vec{b} are unit vector & also

\vec{a} \times \vec{b} is unit vector then,

\vec{a} \times \vec{b}=|a| |b|\sin \theta

As,

\vec{a} & \vec{b} are unit vectors

\sin \theta =1\\ \\ \theta =\sin^{-1}1\\ \\ \theta =\frac{\pi}{2}

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